asm-watcom-x86-32.h@ 77821

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1	/** @file
2	* IPRT - Assembly Functions, x86 32-bit Watcom C/C++ pragma aux.
3	*/
4
5	/*
6	* Copyright (C) 2006-2019 Oracle Corporation
7	*
8	* This file is part of VirtualBox Open Source Edition (OSE), as
9	* available from http://www.virtualbox.org. This file is free software;
10	* you can redistribute it and/or modify it under the terms of the GNU
11	* General Public License (GPL) as published by the Free Software
12	* Foundation, in version 2 as it comes in the "COPYING" file of the
13	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15	*
16	* The contents of this file may alternatively be used under the terms
17	* of the Common Development and Distribution License Version 1.0
18	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19	* VirtualBox OSE distribution, in which case the provisions of the
20	* CDDL are applicable instead of those of the GPL.
21	*
22	* You may elect to license modified versions of this file under the
23	* terms and conditions of either the GPL or the CDDL or both.
24	*/
25
26	#ifndef IPRT_INCLUDED_asm_watcom_x86_32_h
27	#define IPRT_INCLUDED_asm_watcom_x86_32_h
28	/* no pragma once */
29
30	#ifndef IPRT_INCLUDED_asm_h
31	# error "Don't include this header directly."
32	#endif
33
34	#ifndef __FLAT__
35	# error "Only works with flat pointers! (-mf)"
36	#endif
37
38	/*
39	* Note! The #undef that preceds the #pragma aux statements is for undoing
40	* the mangling, because the symbol in #pragma aux [symbol] statements
41	* doesn't get subjected to preprocessing. This is also why we include
42	* the watcom header at both the top and the bottom of asm.h file.
43	*/
44
45	#undef ASMCompilerBarrier
46	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
47	# if 0 /* overkill version. */
48	# pragma aux ASMCompilerBarrier = \
49	"nop" \
50	parm [] \
51	modify exact [eax ebx ecx edx es ds fs gs];
52	# else
53	# pragma aux ASMCompilerBarrier = \
54	"" \
55	parm [] \
56	modify exact [];
57	# endif
58	#endif
59
60	#undef ASMNopPause
61	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
62	#pragma aux ASMNopPause = \
63	".686p" \
64	".xmm2" \
65	"pause" \
66	parm [] nomemory \
67	modify exact [] nomemory;
68	#endif
69
70	#undef ASMAtomicXchgU8
71	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
72	#pragma aux ASMAtomicXchgU8 = \
73	"xchg [ecx], al" \
74	parm [ecx] [al] \
75	value [al] \
76	modify exact [al];
77	#endif
78
79	#undef ASMAtomicXchgU16
80	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
81	#pragma aux ASMAtomicXchgU16 = \
82	"xchg [ecx], ax" \
83	parm [ecx] [ax] \
84	value [ax] \
85	modify exact [ax];
86	#endif
87
88	#undef ASMAtomicXchgU32
89	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
90	#pragma aux ASMAtomicXchgU32 = \
91	"xchg [ecx], eax" \
92	parm [ecx] [eax] \
93	value [eax] \
94	modify exact [eax];
95	#endif
96
97	#undef ASMAtomicXchgU64
98	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
99	#pragma aux ASMAtomicXchgU64 = \
100	".586" \
101	"try_again:" \
102	"lock cmpxchg8b [esi]" \
103	"jnz try_again" \
104	parm [esi] [ebx ecx] \
105	value [eax edx] \
106	modify exact [edx ecx ebx eax];
107	#endif
108
109	#undef ASMAtomicCmpXchgU8
110	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
111	#pragma aux ASMAtomicCmpXchgU8 = \
112	".486" \
113	"lock cmpxchg [edx], cl" \
114	"setz al" \
115	parm [edx] [cl] [al] \
116	value [al] \
117	modify exact [al];
118	#endif
119
120	#undef ASMAtomicCmpXchgU16
121	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
122	#pragma aux ASMAtomicCmpXchgU16 = \
123	".486" \
124	"lock cmpxchg [edx], cx" \
125	"setz al" \
126	parm [edx] [cx] [ax] \
127	value [al] \
128	modify exact [ax];
129	#endif
130
131	#undef ASMAtomicCmpXchgU32
132	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
133	#pragma aux ASMAtomicCmpXchgU32 = \
134	".486" \
135	"lock cmpxchg [edx], ecx" \
136	"setz al" \
137	parm [edx] [ecx] [eax] \
138	value [al] \
139	modify exact [eax];
140	#endif
141
142	#undef ASMAtomicCmpXchgU64
143	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
144	#pragma aux ASMAtomicCmpXchgU64 = \
145	".586" \
146	"lock cmpxchg8b [edi]" \
147	"setz al" \
148	parm [edi] [ebx ecx] [eax edx] \
149	value [al] \
150	modify exact [eax edx];
151	#endif
152
153	#undef ASMAtomicCmpXchgExU32
154	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
155	#pragma aux ASMAtomicCmpXchgExU32 = \
156	".586" \
157	"lock cmpxchg [edx], ecx" \
158	"mov [edi], eax" \
159	"setz al" \
160	parm [edx] [ecx] [eax] [edi] \
161	value [al] \
162	modify exact [eax];
163	#endif
164
165	#undef ASMAtomicCmpXchgExU64
166	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
167	#pragma aux ASMAtomicCmpXchgExU64 = \
168	".586" \
169	"lock cmpxchg8b [edi]" \
170	"mov [esi], eax" \
171	"mov [esi + 4], edx" \
172	"setz al" \
173	parm [edi] [ebx ecx] [eax edx] [esi] \
174	value [al] \
175	modify exact [eax edx];
176	#endif
177
178	#undef ASMSerializeInstructionCpuId
179	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
180	#pragma aux ASMSerializeInstructionCpuId = \
181	".586" \
182	"xor eax, eax" \
183	"cpuid" \
184	parm [] \
185	modify exact [eax ebx ecx edx];
186	#endif
187
188	#undef ASMSerializeInstructionIRet
189	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
190	#pragma aux ASMSerializeInstructionIRet = \
191	"pushf" \
192	"push cs" \
193	"call foo" /* 'push offset done' doesn't work */ \
194	"jmp done" \
195	"foo:" \
196	"iret" \
197	"done:" \
198	parm [] \
199	modify exact [];
200	#endif
201
202	#undef ASMSerializeInstructionRdTscp
203	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
204	#pragma aux ASMSerializeInstructionRdTscp = \
205	0x0f 0x01 0xf9 \
206	parm [] \
207	modify exact [eax edx ecx];
208	#endif
209
210	#undef ASMAtomicReadU64
211	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
212	#pragma aux ASMAtomicReadU64 = \
213	".586" \
214	"xor eax, eax" \
215	"mov edx, eax" \
216	"mov ebx, eax" \
217	"mov ecx, eax" \
218	"lock cmpxchg8b [edi]" \
219	parm [edi] \
220	value [eax edx] \
221	modify exact [eax ebx ecx edx];
222	#endif
223
224	#undef ASMAtomicUoReadU64
225	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
226	#pragma aux ASMAtomicUoReadU64 = \
227	".586" \
228	"xor eax, eax" \
229	"mov edx, eax" \
230	"mov ebx, eax" \
231	"mov ecx, eax" \
232	"lock cmpxchg8b [edi]" \
233	parm [edi] \
234	value [eax edx] \
235	modify exact [eax ebx ecx edx];
236	#endif
237
238	#undef ASMAtomicAddU16
239	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
240	#pragma aux ASMAtomicAddU16 = \
241	".486" \
242	"lock xadd [ecx], ax" \
243	parm [ecx] [ax] \
244	value [ax] \
245	modify exact [ax];
246	#endif
247
248	#undef ASMAtomicAddU32
249	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
250	#pragma aux ASMAtomicAddU32 = \
251	".486" \
252	"lock xadd [ecx], eax" \
253	parm [ecx] [eax] \
254	value [eax] \
255	modify exact [eax];
256	#endif
257
258	#undef ASMAtomicIncU16
259	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
260	#pragma aux ASMAtomicIncU16 = \
261	".486" \
262	"mov ax, 1" \
263	"lock xadd [ecx], ax" \
264	"inc ax" \
265	parm [ecx] \
266	value [ax] \
267	modify exact [ax];
268	#endif
269
270	#undef ASMAtomicIncU32
271	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
272	#pragma aux ASMAtomicIncU32 = \
273	".486" \
274	"mov eax, 1" \
275	"lock xadd [ecx], eax" \
276	"inc eax" \
277	parm [ecx] \
278	value [eax] \
279	modify exact [eax];
280	#endif
281
282	/* ASMAtomicIncU64: Should be done by C inline or in external file. */
283
284	#undef ASMAtomicDecU16
285	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
286	#pragma aux ASMAtomicDecU16 = \
287	".486" \
288	"mov ax, 0ffffh" \
289	"lock xadd [ecx], ax" \
290	"dec ax" \
291	parm [ecx] \
292	value [ax] \
293	modify exact [ax];
294	#endif
295
296	#undef ASMAtomicDecU32
297	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
298	#pragma aux ASMAtomicDecU32 = \
299	".486" \
300	"mov eax, 0ffffffffh" \
301	"lock xadd [ecx], eax" \
302	"dec eax" \
303	parm [ecx] \
304	value [eax] \
305	modify exact [eax];
306	#endif
307
308	/* ASMAtomicDecU64: Should be done by C inline or in external file. */
309
310	#undef ASMAtomicOrU32
311	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
312	#pragma aux ASMAtomicOrU32 = \
313	"lock or [ecx], eax" \
314	parm [ecx] [eax] \
315	modify exact [];
316	#endif
317
318	/* ASMAtomicOrU64: Should be done by C inline or in external file. */
319
320	#undef ASMAtomicAndU32
321	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
322	#pragma aux ASMAtomicAndU32 = \
323	"lock and [ecx], eax" \
324	parm [ecx] [eax] \
325	modify exact [];
326	#endif
327
328	/* ASMAtomicAndU64: Should be done by C inline or in external file. */
329
330	#undef ASMAtomicUoOrU32
331	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
332	#pragma aux ASMAtomicUoOrU32 = \
333	"or [ecx], eax" \
334	parm [ecx] [eax] \
335	modify exact [];
336	#endif
337
338	/* ASMAtomicUoOrU64: Should be done by C inline or in external file. */
339
340	#undef ASMAtomicUoAndU32
341	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
342	#pragma aux ASMAtomicUoAndU32 = \
343	"and [ecx], eax" \
344	parm [ecx] [eax] \
345	modify exact [];
346	#endif
347
348	/* ASMAtomicUoAndU64: Should be done by C inline or in external file. */
349
350	#undef ASMAtomicUoIncU32
351	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
352	#pragma aux ASMAtomicUoIncU32 = \
353	".486" \
354	"xadd [ecx], eax" \
355	"inc eax" \
356	parm [ecx] \
357	value [eax] \
358	modify exact [eax];
359	#endif
360
361	#undef ASMAtomicUoDecU32
362	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
363	#pragma aux ASMAtomicUoDecU32 = \
364	".486" \
365	"mov eax, 0ffffffffh" \
366	"xadd [ecx], eax" \
367	"dec eax" \
368	parm [ecx] \
369	value [eax] \
370	modify exact [eax];
371	#endif
372
373	#undef ASMMemZeroPage
374	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
375	#pragma aux ASMMemZeroPage = \
376	"mov ecx, 1024" \
377	"xor eax, eax" \
378	"rep stosd" \
379	parm [edi] \
380	modify exact [eax ecx edi];
381	#endif
382
383	#undef ASMMemZero32
384	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
385	#pragma aux ASMMemZero32 = \
386	"shr ecx, 2" \
387	"xor eax, eax" \
388	"rep stosd" \
389	parm [edi] [ecx] \
390	modify exact [eax ecx edi];
391	#endif
392
393	#undef ASMMemFill32
394	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
395	#pragma aux ASMMemFill32 = \
396	"shr ecx, 2" \
397	"rep stosd" \
398	parm [edi] [ecx] [eax]\
399	modify exact [ecx edi];
400	#endif
401
402	#undef ASMProbeReadByte
403	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
404	#pragma aux ASMProbeReadByte = \
405	"mov al, [ecx]" \
406	parm [ecx] \
407	value [al] \
408	modify exact [al];
409	#endif
410
411	#undef ASMBitSet
412	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
413	#pragma aux ASMBitSet = \
414	"bts [ecx], eax" \
415	parm [ecx] [eax] \
416	modify exact [];
417	#endif
418
419	#undef ASMAtomicBitSet
420	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
421	#pragma aux ASMAtomicBitSet = \
422	"lock bts [ecx], eax" \
423	parm [ecx] [eax] \
424	modify exact [];
425	#endif
426
427	#undef ASMBitClear
428	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
429	#pragma aux ASMBitClear = \
430	"btr [ecx], eax" \
431	parm [ecx] [eax] \
432	modify exact [];
433	#endif
434
435	#undef ASMAtomicBitClear
436	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
437	#pragma aux ASMAtomicBitClear = \
438	"lock btr [ecx], eax" \
439	parm [ecx] [eax] \
440	modify exact [];
441	#endif
442
443	#undef ASMBitToggle
444	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
445	#pragma aux ASMBitToggle = \
446	"btc [ecx], eax" \
447	parm [ecx] [eax] \
448	modify exact [];
449	#endif
450
451	#undef ASMAtomicBitToggle
452	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
453	#pragma aux ASMAtomicBitToggle = \
454	"lock btc [ecx], eax" \
455	parm [ecx] [eax] \
456	modify exact [];
457	#endif
458
459
460	#undef ASMBitTestAndSet
461	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
462	#pragma aux ASMBitTestAndSet = \
463	"bts [ecx], eax" \
464	"setc al" \
465	parm [ecx] [eax] \
466	value [al] \
467	modify exact [eax];
468	#endif
469
470	#undef ASMAtomicBitTestAndSet
471	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
472	#pragma aux ASMAtomicBitTestAndSet = \
473	"lock bts [ecx], eax" \
474	"setc al" \
475	parm [ecx] [eax] \
476	value [al] \
477	modify exact [eax];
478	#endif
479
480	#undef ASMBitTestAndClear
481	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
482	#pragma aux ASMBitTestAndClear = \
483	"btr [ecx], eax" \
484	"setc al" \
485	parm [ecx] [eax] \
486	value [al] \
487	modify exact [eax];
488	#endif
489
490	#undef ASMAtomicBitTestAndClear
491	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
492	#pragma aux ASMAtomicBitTestAndClear = \
493	"lock btr [ecx], eax" \
494	"setc al" \
495	parm [ecx] [eax] \
496	value [al] \
497	modify exact [eax];
498	#endif
499
500	#undef ASMBitTestAndToggle
501	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
502	#pragma aux ASMBitTestAndToggle = \
503	"btc [ecx], eax" \
504	"setc al" \
505	parm [ecx] [eax] \
506	value [al] \
507	modify exact [eax];
508	#endif
509
510	#undef ASMAtomicBitTestAndToggle
511	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
512	#pragma aux ASMAtomicBitTestAndToggle = \
513	"lock btc [ecx], eax" \
514	"setc al" \
515	parm [ecx] [eax] \
516	value [al] \
517	modify exact [eax];
518	#endif
519
520	#undef ASMBitTest
521	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
522	#pragma aux ASMBitTest = \
523	"bt [ecx], eax" \
524	"setc al" \
525	parm [ecx] [eax] nomemory \
526	value [al] \
527	modify exact [eax] nomemory;
528	#endif
529
530	#if 0
531	/** @todo this is way to much inline assembly, better off in an external function. */
532	#undef ASMBitFirstClear
533	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
534	#pragma aux ASMBitFirstClear = \
535	"mov edx, edi" /* save start of bitmap for later */ \
536	"add ecx, 31" \
537	"shr ecx, 5" /* cDWord = RT_ALIGN_32(cBits, 32) / 32; */ \
538	"mov eax, 0ffffffffh" \
539	"repe scasd" \
540	"je done" \
541	"lea edi, [edi - 4]" /* rewind edi */ \
542	"xor eax, [edi]" /* load inverted bits */ \
543	"sub edi, edx" /* calc byte offset */ \
544	"shl edi, 3" /* convert byte to bit offset */ \
545	"mov edx, eax" \
546	"bsf eax, edx" \
547	"add eax, edi" \
548	"done:" \
549	parm [edi] [ecx] \
550	value [eax] \
551	modify exact [eax ecx edx edi];
552	#endif
553
554	/* ASMBitNextClear: Too much work, do when needed. */
555
556	/** @todo this is way to much inline assembly, better off in an external function. */
557	#undef ASMBitFirstSet
558	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
559	#pragma aux ASMBitFirstSet = \
560	"mov edx, edi" /* save start of bitmap for later */ \
561	"add ecx, 31" \
562	"shr ecx, 5" /* cDWord = RT_ALIGN_32(cBits, 32) / 32; */ \
563	"mov eax, 0ffffffffh" \
564	"repe scasd" \
565	"je done" \
566	"lea edi, [edi - 4]" /* rewind edi */ \
567	"mov eax, [edi]" /* reload previous dword */ \
568	"sub edi, edx" /* calc byte offset */ \
569	"shl edi, 3" /* convert byte to bit offset */ \
570	"mov edx, eax" \
571	"bsf eax, edx" \
572	"add eax, edi" \
573	"done:" \
574	parm [edi] [ecx] \
575	value [eax] \
576	modify exact [eax ecx edx edi];
577	#endif
578
579	/* ASMBitNextSet: Too much work, do when needed. */
580	#else
581	/* ASMBitFirstClear: External file. */
582	/* ASMBitNextClear: External file. */
583	/* ASMBitFirstSet: External file. */
584	/* ASMBitNextSet: External file. */
585	#endif
586
587	#undef ASMBitFirstSetU32
588	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
589	#pragma aux ASMBitFirstSetU32 = \
590	"bsf eax, eax" \
591	"jz not_found" \
592	"inc eax" \
593	"jmp done" \
594	"not_found:" \
595	"xor eax, eax" \
596	"done:" \
597	parm [eax] nomemory \
598	value [eax] \
599	modify exact [eax] nomemory;
600	#endif
601
602	#undef ASMBitFirstSetU64
603	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
604	#pragma aux ASMBitFirstSetU64 = \
605	"bsf eax, eax" \
606	"jz not_found_low" \
607	"inc eax" \
608	"jmp done" \
609	\
610	"not_found_low:" \
611	"bsf eax, edx" \
612	"jz not_found_high" \
613	"add eax, 33" \
614	"jmp done" \
615	\
616	"not_found_high:" \
617	"xor eax, eax" \
618	"done:" \
619	parm [eax edx] nomemory \
620	value [eax] \
621	modify exact [eax] nomemory;
622	#endif
623
624	#undef ASMBitFirstSetU16
625	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
626	#pragma aux ASMBitFirstSetU16 = \
627	"movzx eax, ax" \
628	"bsf eax, eax" \
629	"jz not_found" \
630	"inc eax" \
631	"jmp done" \
632	"not_found:" \
633	"xor eax, eax" \
634	"done:" \
635	parm [ax] nomemory \
636	value [eax] \
637	modify exact [eax] nomemory;
638	#endif
639
640	#undef ASMBitLastSetU32
641	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
642	#pragma aux ASMBitLastSetU32 = \
643	"bsr eax, eax" \
644	"jz not_found" \
645	"inc eax" \
646	"jmp done" \
647	"not_found:" \
648	"xor eax, eax" \
649	"done:" \
650	parm [eax] nomemory \
651	value [eax] \
652	modify exact [eax] nomemory;
653	#endif
654
655	#undef ASMBitLastSetU64
656	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
657	#pragma aux ASMBitLastSetU64 = \
658	"bsf eax, eax" \
659	"jz not_found_low" \
660	"inc eax" \
661	"jmp done" \
662	\
663	"not_found_low:" \
664	"bsf eax, edx" \
665	"jz not_found_high" \
666	"add eax, 33" \
667	"jmp done" \
668	\
669	"not_found_high:" \
670	"xor eax, eax" \
671	"done:" \
672	parm [eax edx] nomemory \
673	value [eax] \
674	modify exact [eax] nomemory;
675	#endif
676
677	#undef ASMBitLastSetU16
678	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
679	#pragma aux ASMBitLastSetU16 = \
680	"movzx eax, ax" \
681	"bsr eax, eax" \
682	"jz not_found" \
683	"inc eax" \
684	"jmp done" \
685	"not_found:" \
686	"xor eax, eax" \
687	"done:" \
688	parm [ax] nomemory \
689	value [eax] \
690	modify exact [eax] nomemory;
691	#endif
692
693	#undef ASMByteSwapU16
694	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
695	#pragma aux ASMByteSwapU16 = \
696	"ror ax, 8" \
697	parm [ax] nomemory \
698	value [ax] \
699	modify exact [ax] nomemory;
700	#endif
701
702	#undef ASMByteSwapU32
703	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
704	#pragma aux ASMByteSwapU32 = \
705	"bswap eax" \
706	parm [eax] nomemory \
707	value [eax] \
708	modify exact [eax] nomemory;
709	#endif
710
711	#undef ASMRotateLeftU32
712	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
713	#pragma aux ASMRotateLeftU32 = \
714	"rol eax, cl" \
715	parm [eax] [ecx] nomemory \
716	value [eax] \
717	modify exact [eax] nomemory;
718	#endif
719
720	#undef ASMRotateRightU32
721	#ifdef IPRT_ASM_WATCOM_X86_32_WITH_PRAGMAS
722	#pragma aux ASMRotateRightU32 = \
723	"ror eax, cl" \
724	parm [eax] [ecx] nomemory \
725	value [eax] \
726	modify exact [eax] nomemory;
727	#endif
728
729	#endif /* !IPRT_INCLUDED_asm_watcom_x86_32_h */
730

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source: vbox/trunk/include/iprt/asm-watcom-x86-32.h@ 77821

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